3 ms·
Unless the components are expensive, that proposition seems dubious. It's much more economical to take a process that produces everything within 12% centered o
by projektfu 2y ago
Unless the components are expensive, that proposition seems dubious. It's much more economical to take a process that produces everything within 12% centered on the desired value and sell it as ±20%. 100% inspection is generally to be avoided in mass production, except in cases where the process cannot reach that capability, chip manufacturing being the classic example. For parts that cost a fraction of a penny, nobody is inspecting to find the jewels in the rough.
- riedel 2y agoActually it seems to be really the case that multimodal distribution are rather the result of batches not having a mean. So it is rather the effect of systematic error [1]. I guess it is really a myth (we did low cost RF designs back in 2005 and had some real issues with frequencies not aligning die to component spread and I really remember that bi modality problem, but I guess okhams razor should have told me that it makes no economical sense) [1] https://www.eevblog.com/2011/11/14/eevblog-216-gaussian-resistor-redux/ https://www.eevblog.com/2011/11/14/eevblog-216-gaussian-resi...
- projektfu 2y agoYup, forever the reason for the trim pot.